The DI 20P is a passive stereo DI box with midas transformer and extended dynamic range. The DI 20P PRO DI 2 offers the same high headroom, dynamic response and sonic clarity you have come to expect. DI 20P is ideal for interfacing stereo keyboards, samplers and other electronic musical instruments to mixing consoles and faithfully reproduces the character of electric and acoustic instruments, allowing far more of the detail of musical performances to be captured. A passive device, the DI 20P does not require any form of external power to complete its mission.